# Math Help - can't rearrange simple equation!

1. ## can't rearrange simple equation!

Hi. I feel a complete simpleton. How do I get this:

(2 - x)2(3 - x) - (3 - x)

to be this:

(1 - x)(3 - x)2

I am utterly stuck with this. Thanks for any help!

2. ## Re: can't rearrange simple equation!

$(2 - x)^2(3 - x) - (3 - x)$
take $(3-x)$ common and try solving, by expanding $(2-x)^2$

3. ## Re: can't rearrange simple equation!

thanx amul28. i don't know what i was doing wrong...

(3 - x)[(2 - x)(2 - x) - 1] = (3 - x)(3 - 4x + x^2)
= (3 - x)(3 - x)(1 - x)

cheers

4. ## Re: can't rearrange simple equation!

$(2-x)^2(3-x)-(3-x)=(3-x)((2-x)^2-1)=(3-x)(2-x-1)(2-x+1)=$

$=(1-x)(3-x)^2$